Single phase, self-regulated alternator
First Claim
1. A generator for producing a higher or lower voltage output comprising an alternator stator, an exciter stator, said exciter stator including two series windings, and means to energize both series windings every other half cycle at the lower voltage output and alternate series windings during every half cycle at the higher voltage output.
3 Assignments
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Accused Products
Abstract
A substantially constant frequency self-regulated generator produces in one embodiment 120 volts or the like single phase output or in another embodiment 120 or 240 volts or the like single phase output. The generator employs an exciter stator and a stationary rectifier assembly with the former being a six pole exciter stator alternately wound with three shunt poles and three series poles with two separate windings on each series pole. The three shunt poles of the exciter stator are connected in series making, in effect, one shunt winding. The series circuit consists of two separate windings on each series pole, which are respectively parallel connected and wound on all three series poles. Each series pole then has two separate isolated coils. With the exciter stator there is employed a stationary diode assembly utilizing three diodes as rectifiers for the shunt and isolated series windings. A further smaller diode in parallel with the shunt winding discharges the stored magnetic field allowing some current flow during the half cycle when the shunt winding is not energized. In addition, a small slide wire resistor may be employed for no-load voltage adjustments.
16 Citations
37 Claims
- 1. A generator for producing a higher or lower voltage output comprising an alternator stator, an exciter stator, said exciter stator including two series windings, and means to energize both series windings every other half cycle at the lower voltage output and alternate series windings during every half cycle at the higher voltage output.
- 20. In a generator of the substantially constant frequency type having an alternator rotor and stator, a corresponding exciter rotor and stator, and operable in two modes, the improvement comprising a multi-pole exciter stator having alternate series and shunt poles, each series pole having two separate windings, and means for using said two separate windings, alternately during each half cycle of one mode of operation and for using said two separate windings concurrently during every other half cycle of the other mode of operation.
- 30. In a generator of the substantially constant frequency type having an alternator rotor and stator, and a corresponding exciter rotor and stator, the exciter stator having at least two separate series windings, and operable in two modes, the improvement comprising a stationary diode assembly including circuit means having control diodes for each winding operative to energize said windings alternately during each half cycle of one mode of operation and concurrently during every other half cycle of the other mode of operation.
Specification